Back-pedaling brake.



"NIL 646,303. Patented Mar. 27, |900.

A. P. MORROW.

BACK PEDALING BRAKE.

(Application filed Kar. 80, 1899.)

(N0 Model.) y 2 Sheets-Sheet l..

"Inmungnou/Lto@ a) MW No. 646,303. Patented Mar. 27,1900.

A. P. Moow.

BACK PEDALING BRAKE.

(Application led Max. 30,\1899.) (No Model.) v 2 sheets-sheet 2.

Il I WVM/wwe@ I "g b X y I SHOM/m Innen/hoz,

UNITED STATES PATENT OFFICE.

ALEXANDER r. Monnew, or ELMIRA, nnwrYoRK.

BACK-PEDALING BRAKE.

SPECIFICATION forming part of Letters I'atent No. 646,303, dated March 27, 1900'.

Application tiled March 30, 1899. Serial No. 711,136. .(No. model.)

To ali whom it muy concern:

Be it known that LALEXANDER P. Monnow, a citizen of the United States, residing at El mira, inthe county of Chemung and State of New York,have invented certain newand useful Improvementsin a Combined Brake and Coaster for Bicycles, &c. and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the tig-1 the rider whereby the rear-wheel sprocket may be quickly disengaged from the hub to permit of coasting without removing the feet from the pedals and whereby back-,pedaling vwill apply a brake to the rear-wheel hub.

'A fu'rther object of the invention is to pro' vide eiective means for quickly adjusting the bearings of the coasting and 'brake mechanism.

The novel features of thc invention and they details ef their-construction will be fully described hereinafter and defined in the appended claims.

In the accompanying drawings, which constitute a part of this specification, Figure 1 ration illustrating the connections between' the brake mechanism band the frame 'of the machine. Fig. 7 is a detail view showing a portion of one member of the brake-clutch, and Fig. 8 is a plan yiew of the non-revoluble `brake-ring and 'its securing-lng'.

The reference-numeral 1 designates the rear-wheel axle, threaded atits ends and adapted to be held stationary in suitable bearings in the frame 2.

3 designates the hub, provided at one end with an annular lange4 4, to which the inner ends of the spokes 5 are secured, a threaded extension G, and an internal annular beveled shoulder 7. The opposite end of ..the hub 3 is also provided with a beveled annular shoulder 8 and a housing comprising a vertical flange 9, a horizontal ange 10', and a laterally projecting concavo convex rim 11, to which the spokes l2 ,are secured. Within this annular chamber or housing is secured a friction-ring 13, of brous or equivalent material, the inner surface of which is slightly inclined or beveled, as shown in Fig. 2.

The driving-sprocket consists of a ring 14, internally threaded to lit upon the threaded extension 6 of the hub, and a rim 15, having sprocket-teethl on its outer periphery and fitting over the ring 14. Between the parts 14 and 15, constituting the sprocket, are interposed clutch devices of any preferred form.

I. preferably'provide the periphery ofv the ringv 14 with equidistant recesses 17 of less depth at one end than at` the `other and arrange in each ofv said recesses a clutch-roller 18, be-

hind which is located a spring-pressed block '19, the relation of 'the parts being such that when the sprocket is being driven forward by the drivingchain the parts 14 and 15 will be clutched together by the rollers to revolve ,in unison; but when the forward motion of the rim is arrested by a stoppage of the pedals the'rollers 18 will drop back into the deeper ends of' the recesses 17, causing the volving the latter.

20 designates a ring.' provided with a non.

to t upon the hub extension 6.

or auxiliary hub comprising two independent sections 24 and 25, one of which, 24, is forme'd with diametrically-opposite slots 26, while the other, 25, is provided with lugs 27, entering the slots 26, and isfcapable of a limited lat-4 eral movement, as will be referred to .more particularlyl hereinafter.A

ring 14 to revolve. within the rimwithout re-V a cone-bearing 32 rim, and the auxiliary hub together revolubly.v

-. cone-bearing 42, provided with a. cap

ball-bearings 44 areinterpo ently of the ring 46.

- clutch .which The outer end of the sleevesection 24 is provided with a shoulder' 2S and 'an annular internally-beveled 'flange 29,-which latter is also rovided with ashoulder 30. Between the shoulder 2S and the beveled shoulder 7 of the hub ballbearings 31 are interposed, and between 'the intenially-beveled flange 29 and conplingring 35, which bears against the shoulder. and is provided with a horizontal internally-threaded flange 36, which is screwed ugon the threaded end of the section 24. T is coupling-ring is provided at diametrically-opposite points with lugs 37, which project into sockets 3S of the sprocket-rim and serve to connect the ring 35, the sprocket- The outer end of the section 25 of the auxiliary hub or sleeve is provided with an annular shoulder 39, from which projects a horizontal flange 40, externally screw-threaded and beveled o'n. its inner side to receive ballbearings 4I, which are held in position by a i or protecting-ring 43. Between the shoulder39 and adjacent beveled `shoulder; 8 of the hub U n the threaded flange 40 of the section `.'i t e clutch mechanism of the brake is arranged, comprising a revoluble ring 45, in-

ternally threaded to ftupon the flange, and

an outer ring 46, supported upon the ring by rings 47 and 48, which are internally threaded for attachment to the flange 40, but bear loosely against shoulders 49 and 50 vof the ring' 46 to revolve independently of said ring. The flange 40 is provided with an .olf-

set or shoulder 5l to facilitate the attach ment: 47, which latter is formed with a of the ring laterally-projecting flange 52.

Between the ring 45 and the inner surface of the ring 46 at equidi'stant points are arranged clutch dev ices 53, similar in construetion to those employed between the part-s 14 and 15 of the sprocket-wheel, but reversely arranged with relation tosaid sprocket-wheel clutches, so that whereas the sprocket-wheel es are normally 'in operation to cause the members of the wheel to revolve together the brakeclutches are normally free to permit the revoluble ring 45 to revolve independ- The outer periphery of the ring 46` is provided with la plurality of equiditant spiral grooves 54, into each of projects a pin 55, said pins extending radially from the horizontal flange or rim 56 of a beveled brake-ring 5 7, the latter'being only slightly inclined to fit within and coperate with the flbelfrietion-i'ing 13, secured to the hub.

The brukwring 5? is h vld uga ust revel ul ion on the adjacent end of the axle 1 ball-bearings 33 are interposed, a prothe forward direction;

'by a lug or arm 5S', having a stem or shank 59, i secured to the flange 56 of' the brake-ring by screws 60, said lug or arm 58 being seated within a socket 61, formed in one end of a bracket 62, securelyclamped by screws 63 to4 the frame 2- of the machine, as shown in Fig.- 6. While the lug or arm 5S preventsrotation of the brake-ring, it is loosely secured in itsy socket to laterally. e.

The operation of the mechanism constructed as above described is as follows: As has been statedabo've, the sprocket members are held Vtogether by their clutches as long as the sprocket is driven in a forward direction, while the clutches of the brake are normally free to allow the ring45 to revolve within the ring 46 as' long as the sprocket is revolving in When the rider desires to coast, he stops the revolution ci the permit the brake-ring to. be shifted pedals and by simply holding the pedals sta' tionary he disen'ga'ge's the two members of the sprocketwheel, the momentum of themachlne causing the wheel-ring 14 to revolve while the sprocket-rim is held stationary. Thus the, coasting is accomplished without the rem oval of the riders feet 4from the pedals and wit-hout operating the brake. To apply thebrakc, the rider imparts back pressure to the pedals,

which revolves the sprocket-rim rearwardly,

lcarrying with it thecouplingring 35 and auxlliaryhrub-sections 24 and 25.4 The backward movement of these sections 24 and 25 causes the clutches 53 to bind upon the ring 46, imparting a rearward rotary movement to,

said ring, which causes the brake-ring '57 and its flange 56 to/ move laterally toward the rcvolvng friction-ring 13 through the medium of the pins 55, which are operated upon by 'the walls of the spiral grooves 54.' The frictional contact of the ring 57 and the revolving friction-ring 13, carried by the hub, retards the revolution of the rear wheel', the degree of braking action dependinginmn the amount olf pressure upon the pedals in the back-peda ing. its socket 61 toI allow of thelateial movement of the brake-ring; but said lug being held by a fixed bracket of the frame eflectually prevents the revolutionof the brake-ring 57.

It will be apparent that as soon l ward revolution ol the sprocket-wheel ,is resumed the brake-clutches will bu released and the sprocket clutches will again clutch the sprocket-rim, `with the result that the brake-ring 57 resumes its normal position out 'of contact with the friction-ring 13.

Au important advantage of the construction here shown and described is that the simultaneous adjustment or tightening of all of the ball-bearings can be'effected by simply.

The lug or arm 58 slides freely within4 IOC IXO

turning either of the cone-bearings 32 or 42.

aliasesl a the right to make all such modifications in the construction as may properly fall within I the scope of the following claims. .I claim as my invention- 1.- Thecombinationwiththerear-wheelhub and axle of a cycle, of a coasting device comprising a sectional sprocket wheel and clutches, a brake device and clutch mechanism therefor` and a coupling between the brake mechanism and one of the sections of the sprocket-wheel,comprising a sectional sleeve,

one member of which is secured to the rim of the sprocket-wheel, the other member being secured by one of the cone-bearings.

2. The combination with the rear-wheelhub and axle of a cycle, of acoasting device comprsing a sectional sprocket wheel and clutches, a brake device and clutch mechanism thei'efor, and a coupling between the secso tionalsprocket-wheel and the brake mechdevices for imparting a rotary' movement to -the grooved ring when the hub and sleeve anism comprising a sectional sleeve within the hub and a ring secured uponv said sleeve and connected to the rim of the sprocket to revolve therewith.

3. The combination with a hub provided with an annular housing at one end,of a friction-ring within said housing, a sleeve or auxiliary hub located within the main hub,

a coasting device located upon one end of the vmain hub,'the outer member of the coasting device being coupled to the 'adjacent end of the sleeve, brake mechanism located upon the opposite end of the sleeve and coper-y ating" with the friction-ring on the hub.

at one end with an annular chamber or housing, of a friction-ring secured withinA lthe housing, coasting mechanism located upon one end of the hub, a sleeve arranged within the hub and coupled to the outer member of the coasting mechansm,abrakering secured to the -frame of the .machine against rotation, but capable of a limited lateral movement, a

peripherally-grooved ring within thel brakering, pins projecting from the brake ring into the grooves of the grooved ring, and clutch are turned in a backward direction.

5. The combination with a hub provided at one end with coasting mechanism, and at its opposite end with a friction-ring, of a twopart sleeve .arranged within the hub, one of said parts being connected to the outer member of the coasting mechanism, a brake-ring cooperating with the other part of the sleeve,

and means operated byback-pedalin g for mov-4 ing said brake-ring laterally.

6. The combination with the hubgana coasting device secured thereto,of a sectional sleeve located within the hub, brake mechanism arranged on one end'of said sleeve, and acoupling-ring secured upon the opposite end'of the sleeve, andl secured to the ou'ter member ofA the coasting device to revolve therewith, said 4. The combination with a hub provided brake mechanism coperating with the coast-` ing devices, and adapted to be operated by back-pedaling.

c 7. The combination with a hub provided at one end with a coasting device, and at its opposite end with a friction-ring, of a sleeve arranged within the hub and coupled at one end to the outer member of`the coasting device, a brake-ring supported upon the opposite end of the sleeve, and having'a nonfrotatable but laterally-movable friction-ring coacting with the friction-ring on the hub, and means for applying and releasing the brake, comprising a ring fixed to the sleeve to revolve therewith, a peripherally-grooved ring-fitting over the xed ring, clutches between said rings and pins projecting from the inner surface of the brake-rin g into the grooves of the grooved ring.

8. The combination with the machine' frame, of a bracket secured thereto and provided'with a socket or opening, a brake-ring provided with a lng or arm iittin'g loosely within said socket or opening, a hub provided at one end with coasting mechanism and at its opposite end with a friction-ring coperating with the brake-ring, a sleeve within saidhub, clutch mechanism for operating the brake, and means for moving the brake-ring laterally.

9. The .combination with a hub provided at one end with a beveled friction-ring, and at its opposite end with coasting mechanism, of

a sectional sleeve within the hub provided with a threaded extension, concentric clutchrings carried by said threaded extension, a non-rotatable but laterally-movable brake'- ring and means for causing the brakering to move laterally and engage the beveled friction-ring on the hub,- and ball-bearings between the sectional sleeve and axle and between the sectional sleeve and hu'b.

10. The combination wim the mue, ofahun provided at one end with alii annular internal shoulder and coasting mechanism, andat its opposite end with a beveled shoulder and a friction-ring, a sectional sleeve within the hub provided -at one end with a shoulder andflange, and at its opposite eiitl with a shoulder and flange and a threaded extension, a

non-rotatable but laterally-adj ustable brakering cooperating wit-h the friction-ring of the hub, ball-bearings between the sleeve and' hub, adjustable cone-bearings on the axle,

ball-bearings between sai-d cone-bearings apd the flanges of the sleeve, clutch mechanism:

for forward driving, and independent clutch mechanism for operating the brake-ring.

In testimony whereof I affix my signature in presence of two witnesses.

ALEXANDER -P. MORROW.

Witnesses: i

OLIVER P HxPPLE,

M. L, BANKS.

'Ils 

